While the ban affects almost all indoor workplaces, some exemptions were provided: • designated hotel rooms • designated rooms in
nursing homes • designated rooms in
prisons
(until 18 July 2018) • designated rooms in offshore
oil rigs • designated rooms in mental health units
(until 1 July 2008) • specialist tobacconists in relation to sampling cigars and/or pipe tobacco. In England, Wales and Northern Ireland, in
theatres and
television studios, actors and actresses can smoke tobacco on theatre stages or on television sets if the artistic integrity makes it appropriate. However, once the person leaves the stage or set, the item must be stubbed out. Normal smoking laws exist for all other parts of the theatre or television studio, including
green rooms, rehearsal rooms and dressing rooms. There have been calls for this exemption to be scrapped, for the health of other actors and audiences. This exemption does not apply to Scotland, where smoking is completely banned in theatres. Comedian
Mel Smith tried to defy the smoking ban by threatening to smoke a real cigar during a play about Winston Churchill during the 2006
Edinburgh Fringe; however, he stopped before lighting the cigar. An exemption was also theoretically possible within the
Palace of Westminster, as for other Royal Palaces, although members of the
House of Commons and the
House of Lords agreed to observe the spirit of the ban and restrict any smoking within the grounds of Parliament to four designated outside areas. Smoking is permitted in a private residence, although not in areas used as a shared work-space. In flats with communal entrances or shared corridors, smoking is not permitted. University
halls of residence presented some dilemmas in practice as regards defining what is public and private. Several universities have imposed a blanket ban on smoking including halls of residence. ==Public transport==